<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <hello></hello>
    </div>

    <script src="https://unpkg.com/vue@next"></script>
    <script>
        const app = Vue.createApp({
            data(){
                return {
                    
                }
            }
        });

        app.component("hello",{
            data(){
                return {
                    msg:'hello component'
                }
            },
            methods:{
                showData() {
                    alert(this.msg)    
                }
            },
            template:`
                <h1>
                    数据：{{msg}}
                    <button @click="showData">按钮</button>
                </h1>
            `
        })

        app.mount("#app");



    </script>
</body>
</html>